Fountain pen



July 27, 1937; s. M. SAGR 2,087,998

FOUNTAIN PEN Filed Jan. 18, 1936 Eg N ze j a l 2 5-d; X1

' Patented July 27, l1937 FOUNTAIN' PEN Solomon M. Sager, Glencoe, Ill.

Application January 18, 1936, Serial No. 59,672

12 Claims.

This invention relates to a fountain pen and more particularly to afountain pen lling unit for insertion in one end of a fountain penbarrel adjacent the inner end of an improved feed bar projecting intothe opposite end of the pen barrel and extending through the fountainpen section and centrally through the barrel to with in a short distanceof the inner end of the filling unit.

It is an object of this invention to provide .a fountain pen fillingunit adapted to be conveniently mounted within one end of the fountanp'en barrel to facilitate filling of the barrel.

It is also an object of this invention to provide a fountain pen feedbar unit including a grooved head portion which is adapted to beextended through a fountain pen barrel section and having the inner endthereof integrally con- Inected up with an elongated shank of reduced oroval cross section adapted to extend into a fountain pen barrel towithin a short distance of the pen filling unit.

It is a further object of this invention to pro- Vvide a fountain penwith a filling device consisting of a separate casing having anapertured closed end and enclosing a bellows type filler provided with astem which projects into an operating plunger slidably engaged in aclosure bushing secured in the opposite end of the casing.

It is another object of this invention to provide a fountain pen with afiller unit adapted to be engaged as a unit in an end of an vordinaryfountain pen barrelfor the purpose of permitk ting easy filling of thebarrel with ink. l

Another object of the invention'is to provide a fountain pen with animproved grooved feed member of one-piece construction including a headportion and a reduced shank portion which 40 is comparatively long andis provided with a passage which connects up with a passage in the headsection to afford an arrangement to ref place the present type of feedmechanism which consists of a feed bar and a separate flexible intaketube.

It is an important object of this invention to provide a fountainpenincluding a. body or barrel having a one-piece feed bar unit projectingthrough the pen section and having a long reduced shank portion formedon the inner end of the head portion of the feed bar and extending towithin a short distance of the inner end of a filler unit engaged in theopposite end of the barrel and comprising a separate casing containing abellows-like filler operable by means of a plunger projecting from thefiller casing and normally enclosed by means of a Cap.

Other and further important objects of this invention will be apparentfrom the disclosures in the specification and the accompanying drawing.

'I'his invention. in a preferred form, is illus' trated in the drawingand hereinafter more fully described.

On the drawing:

Figure 1 is a central longitudinal section of an improved fountain penembodying the principles of this invention and clearly illustrating theimproved flller unit and the elongated feed bar member in cooperatingrelation.

bar unit removed from the fountain pen.

Figure 5 is an inner end view of the feed bar unit illustrating thereduced oval construction of the shank portion of the feed bar unit.

Figure 6 isa central longitudinal section of one end of a 'fountain penincluding a modified form of filler unit and using an apertured washerin the base portion of the bellows mechanism.

As shown on the drawing: ,'The reference numeral I indicates a fountainpen body or barrel open at both ends. Engaged in one end of the barrel lis a section 2 having secured therein a pen point 3 secured between thesection 2 'and an improved elongated onepiece feed bar. unit comprisinga head or main body portion 4 of substantially circular cross sectionhaving one end thereof shaped and tapered to provide; a tip portion 5.kIntegrally formed on the inner end of the head portion 4 is a long shank6 of reduced oval cross section. The one-piece feed bar ,is providedwith ink ducts or grooves 1 extending longitudinally of the feed barfrom the end of the tip portion 5 to the end of the shank 6 for insuringa continuous constant flow of ink from the fountain pen, when in use, atall levels of the ink in the barrel and obviating the clogging up of theink flow at the inner end of the section 2 by the formation of inkbubbles as often occurs in the use of short feed bars, provided with anintake passage 8 which extends from -the Yend of the reduced feed barShank 6 centrally therethrough into the head- 'Ihe feed bar unit isVportion-4 Whereit connects up with a radially directed passage arm 8the outer end of which communicates with the ink feed ducts or grooves'1.

Removably engaged over the section end of the fountain pen is a mainclosure cap I0 which encloses the projecting tip end 5 of the feed barunit and the pen point 3 to protect the same when the fountain pen isnot in use.

Frictionally tted or otherwise secured in the end of the fountain penbarrel opposite the section 2 is an improved fountain pen ller unit foruse in combination with the improved feed bar as illustrated in Fig. 1or if preferred the filler unit may be sold separately and engaged inone end of a fountain pen barrel of any selected make, such for exampleas the type using an ordinary feed bar and an ink intake tube connectedWith the feed bar and projected upwardly into the barrel.

The improved fountain pen ller unit comprises a casing or housing I Iopen at one end and closed by means of an end wall I2 opposite the openend. The end wall I2 is provided with a small central aperture I3.Fitted into the casing II against the inner face of the closed end I2 isa flexible filler mechanism for drawing up ink through the long intakeshank 6 of the feed bar. The ller mechanism comprises a double bulb likerubber bellows I4 open at one end and communicating with an opening l5provided in a packing base or flange like bottom I6 which tightly fitsinto the closed end of the casing II and seats against the inner face ofthe bottom I2 with the opening I5 in communication with the smallopening I3 in the base of the case II. The double barrel bulb bellows I4is closed at its outer end and has integrally formed thereon a rubberstem I'I. The stem I1 projects into a filling plunger I8 which is closedat its outer end while the inner open end is provided with a flange I9.The plunger I8 is rotatably engaged on the stem of the bellows I4 andslidably projects through a passage in a flanged closure bushing 20which is tightly secured in the open end of the casing II. 'I'he bushing20 has integrally formed thereon an outwardly projecting exteriorlythreaded neck 2| for the reception of a removable plunger enclosing capor hood 22.

The complete filler unit as illustrated in Fig. 2 is rigidly secured inthe outer end of the fountain pen barrel I, which is provided with ashoulder at 23 against which the closed end I2 of the filler case II isadapted to seat. 'I'he flange of the bushing 20 fits against the. outerend of the barrel I to complete the insulation of the filler unit in thefountain pen barrel.

To ll the fountain pen barrel I with ink the cap I0 is removed and thepen point and the end 5 of the feed bar is projected into a supply ofink. The protecting cap 22 is now removed from the bushing neck 2|thereby exposing the filling plunger I8 which may be repeatedly operatedinwardly to cause a suction at the inner end of the reduced shankportion 6 of the feed bar thereby causing ink to be drawn upwardlythrough the intake passages 9 and 8, and out into the ink containingchamber of the barrel I to fill the fountain pen. The resiliency of thedouble bulb bellows I4 when compressed causes the plunger I8 to beprojected outwardly into its normal position after each inward movementthereof during the operation for filling the fountain pen.

Fig. 6 illustrates a modified form of a fountain pen lline Lum; in whichthe parts which are identical with those described in connection withFig. 1 are similarly designated. The modified form of flller unitcomprises a separate housing or casing 24 open at the outer end andprovided with an inwardly directed flange 25 at the inner open end ofthe casing. The lling mechanism which is engaged in the casing 24comprises a double bulb-like rubber bellows 26 consisting of a lower orsmaller bulb section open at both ends, and a larger upper bulb portionclosed at one end and provided with a stem 21 which projects into theoperating plunger' I8, similar to the arrangement illustrated in Fig. 1.Integrally formed on the end of the small bulb section of the bellowsmember 26 is an internally grooved packing base 28 provided with abottom opening 29. Seated in the groove of the base 28 to expand thesame into a tight seal with the interior of the casing 24 is a closuredisk or plate 30 having a center cup or boss which is provided with aplurality of small apertures 3| in the side walls thereof fordistributing the discharge of air in small jets from the fillermechanism when the bellows member 26 is collapsed. The casing 24 of thefiller unit is frictionally fitted into the open end of the barrel Iwith the casing flange 25 seated against the shoulder 23 provided in thebarrel I. The bushing 28 through which the operating plunger I8 slidablyprojects is threaded or otherwise secured in the outer end of the casing24 'n and has the anged portion thereof seated against the outer end ofthe barrel I to complete the installation of the ller unit. 'I'heoperation of the modified form of filler unit is substantially the sameas the operation of the filler Iunit illustrated and described inconnection W'ith Figs. 1 to 5 inclusive.

'I'he fountain pen is of a simplified form in which the pen barrel hasthe pen point and the improved elongated feed bar engaged in one end ofthe barrel while in the opposite end of the barrel the ller unit isinstalled in cooperating relation with the inner end of the reducedshank portion 6 of the feed bar. While the improved feed bar and thefiller unit are used in combination in the form of the fountain penillustrated in Figy 1, it will of course be understood that theimportant part of the invention is the provision of the filler unit asillustrated in Fig. 2 and including the filler unit cap 22 which may beconveniently installed in different makes of fountain pen barrels toserve as a filling medium with a feed bar of the type described in thiscase or with the ordinary type of feed bar o-r the-feed bar used incombination with a flexible intake tube.

It will of course be understood that various details of construction maybe varied through a wide range without departing from the principles ofthis invention and it is therefore not the purpose to limit the patentgranted hereon otherwise than necessitated by the scope of the appendedclaims.

I claim asv my invention:

1. A fountain pen comprising an elongated barrel having an annular seatformed in one end thereof, a section at the opposite end of the barrel,a pen point and a feed bar secured in the section, said feed bar havingan elongated reduced shank extending through the barrel to within ashort distance of the annular seat, a F

filler unit engaged in the opposite end of the fountain pen barrel andseated on said seat, said filler unit comprising a casing having anapertured bottom seated against said seat, a resilient bulbous structureof rubber or the like seated in CFI the casing, a stem integrally formedon the bulbous structure, a hollow plunger engaged over the stem andprovided with a ange seated against the bulbous structure, a bushingsecured in the open end of said casing and also seated against the endof the fountain pen barrel with the stem and the hollow plungerprojecting through said bushing to expose the end of the plunger topermit operation of the bulbous structure to cause filling of thefountain pen through the feed bar, and a cap removably engaged on thebushing to enclose the hollow plunger after a filling operation of thefountain pen.

2. A fountain pen comprising a barrel having a section engaged in oneend thereof, a pen point in the section, a feed bar in the section incontact with the pen point and including a reduced passaged shank whichextends into the fountain pen barrel to within a short distance of theend of the ink chamber of the fountain pen barrel, and a filler unitsecured in the outer end of the fountain pen barrel and including anapertured casing, a bulbous structure in said casing, an operatingplunger engaged with the bulbous structure and slidably projecting outof one end of the casing to permit operation of the bulbous structure tocause filling of the fountain pen, and a cap removably engaged on thecasing to enclose the operating plunger after a filling operation.

3. A fountain pen comprising a barrel having a section engaged in oneend thereof, a pen point in the section, a feed bar in the section incontact with the pen point and including a reduced passaged shank whichextends into the fountain pen barrel to within a short distance of theend of the -ink chamber of the fountain pen barrel, a filler unitsecured in the outer end of the fountain pen barrel and including anapertured casing, a bulbous structure in said casing, an operatingplunger engaged with the bulbous structure and slidably projecting outof one end of the casing to permit operation of the bulbous structure tocause lling of the fountain pen, a cap removably engaged on the casingto enclose the operating plunger after a filling operation, and a maincap for removal engagement over the section end of the fountain penbarrel to enclose the pen point and the projecting end of the feed barwhen the fountain pen is not in use.

V 4. In a fountain pen, a ller unit comprising a casing for insertion inone end of the fountain pen barrel, a bulbous rubber-like structure openat one end and closed at the opposite end disposed in the casing, a baseange integrally formed on the open end of the bulbous structure, a stemon the closed end of the bulbous structure and projecting out of thecasing, an operating plunger slidably engaged in thel casing over saidstem and projecting from the casing to' permit operation of the bulbousstructure for filling the fountain pen.

5. In a fountain pen, a filler unit comprising an apertured casingsecured in one end of the fountain pen barrel, a bushing for closing oneend of the casing, a bulbous structure in the casing open removablyengaged on the bushing to enclose the operating plunger when the fillerunit is not in use. l

' 6. n a fountain pen, a fillerv unit comprising a casing closed at oneend and open at the, opposite end and secured in the barrel of thefountain pen, said closed end of the casing having an aperture open atone end and closed at the opposite end,

- an apertured packing base at the open end of the bulbous structureseated against the apertured closed end of the casing, a stem integrallyformed on the closed end of the bulbous strucvture and projecting fromthe casing, a bushing engaged in the open end of the casing to close thecasing and the fountain pen barrel, a plunger engaged over the stem andslidably projecting through the bushing, a' flange integrally formed onthe plunger seated on the closed end of the bulbous structure andengaged against the inner end of the bushing to hold the plunger againstremoval from the bushing, and a cap removably engaged onthe bushing forenclosing the projecting end of the plunger. A

'7. In a fountain pen, a filler unit comprising a casing open at one endand having an apertured base at the opposite end, said casing secured inone end of the fountain pen barrel, a bushing secured in the open end ofthe casing and having a flange seating against the end of the fountainpen barrel. a bulbous rubber-like structure engaged in the casing closedat one end and having an apertured packing base at the opposite end insealing contact with the inner Wall of the casing and with the aperturedbase of the casing,` a stem integrally formed on the closed end ofthebulbous structure and projecting outwardly through the bushing, aflanged plunger engaged on the bulbous structure over vsaid stem. andslidably projecting through the bushing-into a 4position to permitoperation of the bulbous structure for filling the fountain pen barrel,and a closure removably engaged on the bushing'for enclosing the plungerwhen the same is not in use.

8. In a fountain pen, a filler unit comprising a casing removablysecured in one end of the fountain pen barrel, a bulbous rubber-likestructure in the casing,v and plunger means seated on the bulbousstructure and projecting from the casing to permit operation thereof tocause application of pressure to the bulbous structure.

9. In a fountain pen, a filler unit comprising a casing adapted to beremovably secured in one end of a fountain pen barrel, a. bulbousrubber-like structure in the casing, a grooved packing base integrallyformed on one end of the bulbous structure, an apertured disk seated inthe grooved base to expand the same into sealing contact with theinterior of the casing, a stem integrallyformed on the opposite end ofthe bulbous structure and projecting from the casing, and an operatingplunger rotatably contacting the bulbous structure and enclosing saidstem and slidably projecting from the lcasing to permit operation of thebulbous structure.

10. A fountain pen including in combination a filler unit comprising acasing, a rubber-like filling means engaged in the casing and comprisinga bulbous portion, a bellows-like section in'- tegrally formed on oneend of the bulbous portion, an apertured base connected with thebellows-like portion, a stem integrally formed on the bulbous portionand projecting from the casing, and an operating plunger seated on thebulbtherein, a bulbous structure seated in the casing ous portion andenclosing said stem, said operating plunger slidably projecting from thecasing into a position to permit operation of the bulbous structureWithin the casing.

11. A fountain pen lling unit comprising a casing, a hollow plungerslidably projecting from the casing closed at one end and having aflange formed on the inner end to prevent removal of the plunger fromthe casing, a bellows-like rubber structure engaged in the casing, astern integrally formed on the bellows-like rubber structure andprojecting into the plunger, a grooved packing base formed on thebellows-like rubber structure, and an apertured disk engaged in thegrooved base to expand the same into, a tight sealing flt with theinterior of the casing.

12. In a fountain pen including in combina,- tion a lling meanscomprising a large main bulb portion open at one end .and closed at theopposite end, a stem on the closed end of the main bulb portion7 asmaller bulb section integrally formed on the open end of the large bulbportion, an internally grooved apertured base, integrally formed on thesmall bulb section, and a. disk seated in the groove of said base andhaving a cup-shaped portion provided with a plurality of air escapeapertures in the side Walls thereof.

SOLOMON M. SAGER.

